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TaxonomyBrowse
Info
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Species Bassaniana utahensis

Bassaniana utahensis - male Pedipalp, ventral view (BG:507543) - Bassaniana utahensis - male Reddish brown, black Crab spider - Bassaniana utahensis - female Reddish brown, black Crab spider - Bassaniana utahensis - female Reddish brown, black Crab spider - Bassaniana utahensis - female crab spider - Bassaniana utahensis - male Adult Female - Bassaniana utahensis - female Crab spider - Bassaniana utahensis
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Chelicerata (Chelicerates)
Class Arachnida (Arachnids)
Order Araneae (Spiders)
Infraorder Araneomorphae (True Spiders)
No Taxon (Entelegynae)
Family Thomisidae (Crab Spiders)
Genus Bassaniana (Bark Crab Spiders)
Species utahensis (Bassaniana utahensis)
Synonyms and other taxonomic changes
Coriarachne utahensis has been placed in synonymy here
Identification
Males
So I looked at these carefully today, comparing only the males of spiders I think the ID is 100% correct.
vs.

Here is what I see... for differences.
Coriarachne brunneipes males tend to have a
1. more elongated abdomen
2. less coloring on the legs
3. longer leg segments
4. carapace tends to have deeper 'grooves'
5. Perhaps the white marking on the abdomen tend to point more forward toward the edges.

Now I think there is the possibility that many of the Coriarachne brunneipes photographed were just 'thinner' than the Bassaniana utahensis, but up to now those points seem to be consistent.